Manufacture of wall-coverings.



O. WIEDEMANN.

MANUFACTURE OF WALL COVERINGS.

APPLIGATIOI'I FILED MAR.13, 1914.

1,19, Patented Mar. 2, 1915.

BY W K ATTOR/IIEW WW stares rarnrtrrt rcn.

OTTO WIEDEMANN, 0F DfEMIVIIN, GERMANY.

IVIANUFACTURE WALL-COVERINGS.

f,ll29,933.

To all whom it may concern Be it known that T, D'rro WIEDEMANN, asubject of the King of Prussia, residing at Demmin, Prussia, Germany,have invented certain new and useful Improvements in or Pertaining tothe Manufacture of Wall- Coverings, of which this is a specification.

This invention relates to the manufacture of wall-coverings, and it hasfor its object the production of a covering material having a woodensurface, but in other respects resembling wall-paper, inasmuch as it isquite flexible and can be attached as easily to a curved as to astraight surface of wood, cement, mortar, or other material. Theflexibility of the wall-covering produced enables certain parts anddetails which hitherto have had to be made in solid wood to be made of acheaper material and then coveredwith such a covering.

An important advantage of the wall-covering in accordance with thepresent invention consists in the fact that it can be polsired, beattached to a curved surface.

The accompanying'drawing represents a.

perspective view, partly broken away of a wall covering made accordingto my invention.

Covering material consisting of a hardwood veneer attached to a softflexible backing, such as linoleum or the like, has already beenproposed; but the method employed in its manufacture has been such as tocause the adhesive material employed to penetrate the veneer,renderingit brittle and impairing its flexibility.

Now the present invention has for its object to obviate this defect, andaccording thereto, in order as far as possible to prevent the adhesivemedium 6 from penetrating into the veneer a of oak, mahogany, maple orother hardwood and rendering it brittle, so that it cracks or flaws whenbent, the hardwood veneer is allowed to remain cool, or it may be,artificially. cooled during its attachment to the soft backing, whilethe backing c itself is at the same time artie ficially heated.

It has heretofore been usual, in the pro:

duction of materialconsisting of several the methods heretofore proposedfor this s,

purposeboth sides of the material to be Specification of Letters Patent.

Application filed March 13, 1914. Serial No. 824,396.

Patented Mar. 2, MM&

joined together have been subjected to heat. In accordance with themethod to which this invention relates, however, only one side issubjected to beat, this side being the soft backing; with the resultthat the adhesive medium sets so rapidly that it fails to penetrate thehardwood veneer, and remains on its rear surface which is to be joinedto the soft backing, while it notwithstanding readily penetrates theheated backing and unites it in an absolutely satisfactory manner to thehardened veneer. The resulting covering as previously stated may beattached to a wall or other surface of any degree of curvature.

It is always advantageous to carry out the various operations, such aspolishing, deadening and the like, to which the wallcovering may besubjected While this covering is laid flat, and before it is attached tothe curved surface to be covered by it, as by this means theseoperations can ;be carried out in a more satisfactory manner.

What I claim is 1. The method for the manufacture of a wall-coveringwhich consists in inserting between a sheet of. wooden veneer and asheet of flexible material, a layer of a cementitious substance adaptedto be rendered adhesive by heating, and heating the exposed or rearsurface of the flexible sheet. 2. The method for the manufacture of awall-covering which consists in inserting between a sheet of woodenveneer and a sheet of flexible material, a layer of a cem-.wall-covering which consists in inserting glue between a sheet ofVeneer and a sheet of linoleum, heating the rear surface of the linoleumsheet and cooling the front or exposed surface of the veneer.

5. The method for the manufacture of awall-covering which consists ininserting between a sheet of wooden veneer and a sheet of flexiblematerial, a layer of a cementitious substance adapted to be renderedadhesive by heating, heating the exposed or rear surface of the flexiblesheet and roughening this surface.

6. The method for the manufacture of a wall-covering which consists ininserting between a sheet of wooden veneer and a sheet of flexiblematerial, a layer of a cementitious substance adapted to be renderedadhesive by heating, heating the exposed or rear surface of the flexiblesheet, cooling the front or exposed surface of the veneer; androughening the rear surface of flexible material.

7. The method for the manufacture of a wall-covering which consists ininserting glue between a sheetof veneer and a sheet of linoleum, heatingthe rear surface of the linoleum sheet and roughening this surace.

8. The method for the manufacture of a wall-covering which consists ininserting glue between a sheet of veneer and a sheet of linoleum,heating the rear surface of the linoleum sheet, cooling the front orexposed surface of the veneer and roughening the rear surface of thelinoleum.

In testimony whereof I have hereunto affixed my signature in thepresence of two witnesses.

Munich, this 26 day of February 1914:.

OTTO WIEDEMANN.

Witnesses:

A. MoCoY, ARTHUR GUBE.

